As many as 222 amphibian species could already have gone extinct, and 2,873 are in danger of extinction, says the second Global Amphibian Assessment, which has been published on 4 October 2023 in the journal Nature.
This is our third and final piece on the second Global Amphibian Assessment. Part I summarised the science, Part II told the stories of the four confirmed extinctions, and this final piece will focus on species recovery. Conservation works! There is hope.
The Nature paper concludes with a call to action which is, like everything else, supported by the science. 63 amphibian species have improved in conservation status since 1980 thanks to conservation; 94% of these were the result of habitat protection and improved habitat management.
The Sierra Juarez Robber Frog is one of the species with a remarkable story of hope for the future of amphibians. In the last assessment (2004), this miniature Mexican frog was assessed as Critically Endangered, but with a note that it might actually be extinct due to chytridiomycosis.
However, the species was observed again in 2009, and thanks to Mexico’s Payment for Hydrological Services Program, which compensates landowners in return for looking after their land and water sources, this species’ habitat now benefits from a high level of protection and the species was reassessed as Near Threatened (conservation dependent) in 2022. This programme is also attributed for the same improvement in status for the Sierra Juarez Brook Frog.
The Sierra Juarez brook frog was reclassified from Endangered to Near Threatened in the latest assessment due to conservation action. Image: Chris Grünwald CC BY-NC 4.0 DEED
A similar system in Costa Rica is the reason why the La Estrella salamander and Richard’s salamander both improved from Near Threatened to Least Concern.
Various national parks can be attributed to the improvements for several species as well (usually those with small ranges which are entirely protected once the parks were under strong management): e.g., Kalakad Mundanthurai Tiger Reserve (Western Ghats, India) is mentioned in the rationale for three species’ improvements and the drastic improvement in the management of Kinabalu National Park (Sabah, Malaysian Borneo) in 2004 is attributed to seven species’ improvements.
Priority areas for amphibians
The obscure bush frog was reclassified from Vulnerable to Least Concern due to the management of established protected areas and effective protection of areas of lowland rainforest across its range in Brunei Darussalam and Malaysia (Sabah, Sarawak). Image © Saurabh Sawant
The data in the second Global Amphibian Assessment provides a guide for how action for amphibians can be targeted and effective, and which areas should be prioritised for amphibian conservation. For example, as well as the Neotropics, other areas with large concentrations of threatened amphibians include western Cameroon and eastern Nigeria, the Eastern Arc Mountains of Tanzania, Madagascar, the Western Ghats of India, Sri Lanka, and central and southern China.
In Cameroon and Madagascar, without an established organisation already leading on amphibian conservation, the programme has supported local efforts to create organisations focused on saving amphibians: Miaro Ny Sahona (MISA) by two Malagasy scientists, Tsanta Rakotonanahary and Serge Ndriantsoa, and Herp Cameroon by Marina Kameni Ngalieu with support from Herp Conservation Ghana.
